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Vinu Patel

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last 3 solved tasks
What 5-digit number satisfies the following requirements? 1. No zeroes; 2. First two digits are the same; 3. Fourth digit is twice the first; 4. Last digit is twice the third; 5. Sum of all digits is 18

Thomas Chrowder Chamberlin

Died 15 Nov 1928 at age 85 (born 25 Sep 1843). American geologist known for his "planetesimal hypothesis". With Forest Ray Moulton in 1904, he proposed that the solar system formed after gas flares were ripped from the sun by the gravitational field of a passing star. The flares then condensed into "planetesimals," arrayed in a spiral extending from the sun, gradually accumulated material and became the planets we know today. From 1876, he was Wisconsin Geological Survey's chief geologist, moving to head the glacier division of the U.S. Geological Survey (1881). He was president of the University of Wisconsin (1887-92), and then for 26 years he was head of its geology department of the University of Chicago. He founded The Journal of Geology.

Blind Skydivers

Why don't blind people skydive more often?

It scares the shit out of their dogs.

How does a blind skydiver know the ground is near?

The leash goes slack

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